On the CCENT, Troubleshooting episode at the 44:51 time frame, you discuss encapsulation mismatch on a trunk and the fact that you need to "stare and compare" the port configurations on both ends.
In troubleshooting this issue, what would the initial complaint be? Someone can't reach someone else- even on the same VLAN (if seperated by the router) or nobody is getting past the router (ie internet)?
Would an interface status of either port show anything with the packets?
-
CCENT Troubleshooting Encapsulation Mismatch
-
@Dale-Ackerman said in CCENT Troubleshooting Encapsulation Mismatch:
On the CCENT, Troubleshooting episode at the 44:51 time frame, you discuss encapsulation mismatch on a trunk and the fact that you need to "stare and compare" the port configurations on both ends.
In troubleshooting this issue, what would the initial complaint be? Someone can't reach someone else- even on the same VLAN (if seperated by the router) or nobody is getting past the router (ie internet)?Ok. So in your situation both would probably happen. The trunk will not work and therefore the traffic in the same vlan on both switches will not be connected. Depending on where the router is connected, it could cause this as well.
Would an interface status of either port show anything with the packets?
no, it will just fail to send traffic across the trunk if it's mismatched. if you run a
show int trunkand your switch doesn't appear to have one and it should that would be indicative of the trunk being down.
